Toshi, that 'Cobra looks to be a far superior kit to the Revell 32-scale kit that I am currently working on. I started mine last September along with three 48-scale Airacobras, but I expect you will finish your's before I complete any of mine.
One thing I will warn you about regarding the Airacobra is that all of the kits I have ever seen of this are notorious tail sitters. They require a lot of nose weighting to keep them on the tricycle gear. Which then leads to the problem. With all the armament detail up front, where do you out weight sufficient to keeping it from sitting on its tail? The Revell kit not feature any armament detail in the nose so this was not a problem, but this Kittyhawk kit appears to feature all of that detail, which just begs to be displayed.
Looking forward to seeing your completed 'Cobra.